JPH10172450A - Cathode-ray tube and manufacture thereof - Google Patents
Cathode-ray tube and manufacture thereofInfo
- Publication number
- JPH10172450A JPH10172450A JP8333219A JP33321996A JPH10172450A JP H10172450 A JPH10172450 A JP H10172450A JP 8333219 A JP8333219 A JP 8333219A JP 33321996 A JP33321996 A JP 33321996A JP H10172450 A JPH10172450 A JP H10172450A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic shield
- frame
- internal magnetic
- ray tube
- cathode ray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高電圧を利用し、
電子ビ−ムを照射するタイプの陰極線管、特にその内部
磁気シ−ルドの固定方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention utilizes a high voltage,
The present invention relates to a cathode ray tube of the type that irradiates an electron beam, and more particularly to a method of fixing an internal magnetic shield thereof.
【０００２】[0002]
【従来の技術】従来より、陰極線管の枠体（シャドウマ
スクフレ−ム）と内部磁気シ−ルドとを溶接固定する際
の溶接火花による異物に起因する放電を防止し、耐圧特
性を向上させることを目的として、例えば特開平５−１
５１９０８号公報に示されているように、枠体と内部磁
気シールドとをバネ係止部材を用いて固定する方法が提
案されている。2. Description of the Related Art Conventionally, when a frame (shadow mask frame) of a cathode ray tube is welded and fixed to an internal magnetic shield, discharge caused by foreign matter due to welding sparks is prevented, and the pressure resistance is improved. For the purpose, for example, see
As disclosed in Japanese Patent No. 51908, there has been proposed a method of fixing a frame body and an internal magnetic shield using a spring locking member.
【０００３】すなわち、枠体及び内部磁気シールドを固
定するために、それぞれ陰極線管の管軸方向に直交する
方向に張り出したフランジ部の各辺に、直径１０ｍｍ以
下の係合孔を一辺当たり１０個程度設け、これらの係合
孔に略Ω形状のバネ係止部材を嵌装し、バネの弾性によ
り両者を固定する。この方法によれば、溶接を行わずに
バネの弾性により枠体及び内部磁気シールドを固定する
ことができ、溶接火花による異物に起因する放電を防止
することができる。[0003] That is, in order to fix the frame and the internal magnetic shield, ten engagement holes with a diameter of 10 mm or less per side are provided on each side of the flange part which protrudes in a direction perpendicular to the tube axis direction of the cathode ray tube. A substantially Ω-shaped spring locking member is fitted into these engagement holes, and both are fixed by the elasticity of the spring. According to this method, the frame and the internal magnetic shield can be fixed by the elasticity of the spring without performing welding, and discharge due to foreign matter due to welding spark can be prevented.
【０００４】[0004]
【発明が解決しようとする課題】従来より、量産性等を
考慮して、内部磁気シ−ルドは薄板をプレスで打ち抜い
て製造されている。プレス加工の場合、薄板を打ち抜く
際に、打ち抜かれた部分の端面にバリが発生する。一般
的に、バネ系止部材の材料の方が内部磁気シ−ルドの材
料よりも硬度が高いので、枠体に内部磁気シ−ルドを固
定するためにバネ系止部材を係合孔に嵌装する際、バネ
系止部材が係合孔の端面に接触することにより、内部磁
気シ−ルドの係合孔の端面のバリが脱落する。Conventionally, the internal magnetic shield is manufactured by punching a thin plate with a press in consideration of mass productivity and the like. In the case of press working, when punching a thin plate, burrs are generated on the end face of the punched portion. Generally, the material of the spring-based stop member is higher in hardness than the material of the internal magnetic shield, so that the spring-based stop member is fitted into the engagement hole in order to fix the internal magnetic shield to the frame. When mounting, the burr on the end face of the engagement hole of the internal magnetic shield comes off because the spring-based stop member contacts the end face of the engagement hole.
【０００５】金属屑であるバリが脱落すると、シャドウ
マスクの開口部に挟まり、開口部を塞ぐ場合がある。ま
た、直接シャドウマスクの開口部に挟まらなくとも、シ
ャドウマスクと枠体とのわずかな隙間に侵入し、その後
の工程、例えばパネルとフアンネルを接着するフリット
シ−ル工程、電子銃を取りつける封止工程、バルブ内を
真空にする排気工程等において、振動或いは衝撃等によ
り、バリがシャドウマスクと枠体の隙間から外れ、シャ
ドウマスクの開口部に挟まることもあり得る。シャドウ
マスクの開口部にバリが挟まると、シャドウマスクの孔
詰まりとなり、電子ビ−ムが遮蔽され、蛍光体が発光し
ない。即ち、画像欠陥となる。When burrs, which are metal scraps, fall off, they may be caught in the openings of the shadow mask and block the openings. In addition, even if it is not directly sandwiched between the openings of the shadow mask, it penetrates into a slight gap between the shadow mask and the frame, and is subjected to subsequent processes, for example, a frit sealing process for bonding a panel and a funnel, and sealing for mounting an electron gun. In a process, an evacuation process for evacuating the inside of the valve, or the like, burrs may come off from a gap between the shadow mask and the frame body due to vibration or impact, and may be caught in an opening of the shadow mask. If burrs are caught in the openings of the shadow mask, the holes in the shadow mask are clogged, the electron beam is blocked, and the phosphor does not emit light. That is, an image defect occurs.
【０００６】シャドウマスクの孔詰まり異物を採取解析
したところ、異物の約３０％が金属異物であるバリであ
った。一方、プレス加工において、バリの発生をなくす
ることは不可能であるため、バリ除去のために、例えば
ブラスト処理、化学研磨、電解研磨等の方法が実施され
ている。ブラスト処理の場合、内部磁気シ−ルドに高圧
で研磨材を当てるため、内部磁気シ−ルドを変形させて
しまうという問題を有している。また、化学研磨や電解
研磨等の場合、研磨処理後の洗浄、中和、洗浄等の工程
が必要となる。しかしながら、これらの後処理が悪い場
合、後工程で行われる内部磁気シ−ルドの表面処理であ
る黒化膜処理において、膜の品質にムラが生じたり、膜
の脱落等が生じる。また、これらの処理に工数がかか
り、コストアップの要因となる。When foreign substances clogged in the shadow mask were sampled and analyzed, it was found that about 30% of the foreign substances were burrs which were metallic foreign substances. On the other hand, since it is impossible to eliminate the generation of burrs in the press working, methods such as blasting, chemical polishing, and electrolytic polishing are implemented to remove burrs. In the case of the blasting process, since the abrasive is applied to the internal magnetic shield at high pressure, there is a problem that the internal magnetic shield is deformed. In the case of chemical polishing, electrolytic polishing, or the like, steps such as cleaning, neutralization, and cleaning after the polishing treatment are required. However, if the post-processing is poor, the quality of the film becomes uneven or the film falls off in the blackening film processing which is the surface treatment of the internal magnetic shield performed in the post-process. In addition, these processes require a lot of man-hours, which causes a cost increase.
【０００７】本発明は、上記従来例の問題点を解決する
ためになされたものであり、シャドウマスクを支持する
枠体と内部磁気シールドとをバネ係止部材によりワンタ
ッチで固定する陰極線管及びその製造方法であって、バ
ネ係止部材を枠体及び内部磁気シールドに設けられた係
合孔に嵌装させる際に、バリの落下等を防止することを
目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and a cathode ray tube in which a frame supporting a shadow mask and an internal magnetic shield are fixed in one touch by a spring locking member, and a cathode ray tube therefor. It is a manufacturing method for preventing a burr from falling when fitting a spring locking member into an engagement hole provided in a frame and an internal magnetic shield.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、本発明の陰極線管は、所定のパターンに配置された
所定形状の複数の開口部を有するシャドウマスクと、陰
極線管の管軸に略直交する方向に形成された第１のフラ
ンジ部及び前記第１のフランジ部に形成された複数の第
１の係合孔を有し、前記シャドウマスクを支持する枠体
と、前記陰極線管の管軸に略直交する方向に形成された
第２のフランジ部及び前記第２のフランジ部に形成さ
れ、前記枠体の第１の係合孔にそれぞれ対向する複数の
第２の係合孔を有し、前記枠体に固定された内部磁気シ
−ルドと、前記対向する第１の係合孔及び第２の係合孔
を貫通して嵌合し、前記内部磁気シールドを前記枠体に
固定する複数のバネ係止部材を具備し、少なくとも前記
内部磁気シ−ルドの第２の係合孔の端面のうち、前記バ
ネ係止部材が摺動する部分を折り返したものである。In order to achieve the above object, a cathode ray tube according to the present invention comprises: a shadow mask having a plurality of openings of a predetermined shape arranged in a predetermined pattern; A frame for supporting the shadow mask, the frame having a first flange formed in a direction perpendicular to the first flange and a plurality of first engagement holes formed in the first flange, and a tube for the cathode ray tube; A second flange portion formed in a direction substantially perpendicular to the axis and a plurality of second engagement holes formed on the second flange portion and opposed to the first engagement holes of the frame, respectively; Then, the internal magnetic shield fixed to the frame is fitted through the opposed first and second engagement holes, and the internal magnetic shield is fixed to the frame. And a plurality of spring locking members for Of the end face of the engaging hole of the spring engaging member is one that was folded portion slides.
【０００９】上記構成において、前記内部磁気シ−ルド
の第２の係合孔の各辺の折り返し幅は１．０ｍｍ以下で
あることが好ましい。また、前記枠体の第１の係合孔及
び前記内部磁気シ−ルドの第２の係合孔の開口部の形状
は、略矩形、略円形及び略楕円形から選択されたいずれ
かであることが好ましい。In the above structure, it is preferable that a turn width of each side of the second engagement hole of the internal magnetic shield is 1.0 mm or less. The shape of the opening of the first engagement hole of the frame and the second engagement hole of the internal magnetic shield is any one selected from a substantially rectangular shape, a substantially circular shape, and a substantially elliptical shape. Is preferred.
【００１０】また、本発明の陰極線管の製造方法は、所
定のパターンに配置された所定形状の複数の開口部を有
するシャドウマスクと、前記シャドウマスクを支持する
枠体と、前記枠体に固定された内部磁気シ−ルドとを具
備する陰極線管の製造方法であって、前記枠体及び内部
磁気シールドの陰極線管の管軸に略直交する方向に形成
された第１及び第２のフランジ部に、それぞれ相互に対
向する複数の第１及び第２の係合孔を設け、少なくとも
前記内部磁気シ−ルドの第２の係合孔の端面のうち、前
記バネ係止部材が摺動する部分を折り返し、前記対向す
る第１の係合孔及び第２の係合孔にそれぞれバネ係止部
材を貫通して嵌合させ、前記内部磁気シールドを前記枠
体に固定する。Further, according to the method of manufacturing a cathode ray tube of the present invention, there is provided a shadow mask having a plurality of openings of a predetermined shape arranged in a predetermined pattern, a frame supporting the shadow mask, and fixed to the frame. A method for manufacturing a cathode ray tube having an internal magnetic shield provided therein, the first and second flange portions formed in a direction substantially perpendicular to a tube axis of the cathode ray tube of the frame and the internal magnetic shield. A plurality of first and second engagement holes which are respectively opposed to each other, and at least a portion of the end surface of the second engagement hole of the internal magnetic shield on which the spring locking member slides. Is folded back and fitted into the opposing first engagement hole and second engagement hole, respectively, through a spring engagement member, and the internal magnetic shield is fixed to the frame.
【００１１】上記構成において、前記内部磁気シ−ルド
の第２の係合孔の各辺の折り返し幅を１．０ｍｍ以下と
することが好ましい。また、前記枠体の第１の係合孔及
び前記内部磁気シ−ルドの第２の係合孔の開口部の形状
は、略矩形、略円形及び略楕円形から選択されたいずれ
かであることが好ましい。In the above structure, it is preferable that a turn width of each side of the second engagement hole of the internal magnetic shield be 1.0 mm or less. The shape of the opening of the first engagement hole of the frame and the second engagement hole of the internal magnetic shield is any one selected from a substantially rectangular shape, a substantially circular shape, and a substantially elliptical shape. Is preferred.
【００１２】上記本発明の陰極線管及びその製造方法に
よれば、バネ係止部材を枠体及び内部磁気シ−ルドに設
けられた第１及び第２の係合孔に嵌装する際、バネ係止
部材は、内部磁気シ−ルドの第２の係合孔の端面を折り
返した、バリのないなめらかな面を摺動する。そのた
め、バネ係止部材がバリと接触せず、バリを落下させる
こともない。また、係合孔の各辺の折り返し幅を１．０
ｍｍ以下とすることにより、プレス加工による折り曲げ
の際の密着性を良好にすることができ、折り返し部に隙
間がないため、折り返し部への異物の侵入を防止すると
いう効果を有する。また、枠体の第１の係合孔及び内部
磁気シ−ルドの第２の係合孔の開口部の形状を、略矩
形、略円形及び略楕円形から選択されたいずれかとする
ことにより、係合孔の端面の折返し加工が容易にできる
とともに、様々な形状のバネ係止部材に対応することが
できる。According to the cathode ray tube and the method of manufacturing the same of the present invention, when the spring locking member is fitted into the first and second engagement holes provided in the frame and the internal magnetic shield, the spring is used. The locking member slides on a smooth surface without burrs, which is obtained by turning the end surface of the second engagement hole of the internal magnetic shield. Therefore, the spring locking member does not contact the burr, and the burr does not drop. Further, the folded width of each side of the engagement hole is set to 1.0.
When the thickness is equal to or less than mm, the adhesiveness at the time of bending by press working can be improved, and since there is no gap in the folded portion, there is an effect of preventing entry of foreign matter into the folded portion. Further, the shape of the opening of the first engaging hole of the frame and the opening of the second engaging hole of the internal magnetic shield is selected from substantially rectangular, substantially circular, and substantially elliptical shapes. Folding of the end surface of the engagement hole can be easily performed, and various shapes of spring locking members can be accommodated.
【００１３】[0013]
【発明の実施の形態】以下に、本発明の陰極線管及びそ
の製造方法の好適な一実施形態について、図１〜図５を
参照しつつ説明する。図１及び図２はそれぞれ、本発明
の陰極線管におけるシャドウマスク１、シャドウマスク
を支持する枠体（シャドウマスクフレーム）２及び内部
磁気シールド３等を組立てた中間体の構成を示す正面図
及び底面図である。図に示すように、枠体２及び内部磁
気シールド３は、それぞれ管軸Ｘに直交する方向に張り
出した第１及び第２のフランジ部２ａ，３ａを有し、複
数のバネ係止部材６により内部磁気シールド３の第２の
フランジ部３ａが枠体２の第１のフランジ部２ａに固定
されている。なお、８はパネルである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a cathode ray tube and a method for manufacturing the same according to the present invention will be described below with reference to FIGS. 1 and 2 are a front view and a bottom view, respectively, showing the structure of an intermediate body in which a shadow mask 1, a frame (shadow mask frame) 2 supporting the shadow mask 2, an internal magnetic shield 3 and the like in the cathode ray tube of the present invention are assembled. FIG. As shown in the figure, the frame body 2 and the internal magnetic shield 3 have first and second flange portions 2a and 3a projecting in a direction perpendicular to the tube axis X, respectively. The second flange 3 a of the internal magnetic shield 3 is fixed to the first flange 2 a of the frame 2. In addition, 8 is a panel.
【００１４】シャドウマスク１は、薄板（例えば厚さ
０．１３ｔ）にエッチング加工等により、丸、スリッ
ト、スロット等の開口部（例えば丸孔であれば直径約φ
１１０μｍ）を設けたものであり、その後、プレス加工
等により所定の形状に成形したものである。シャドウマ
スク１の材料として、例えばインバ−材（３６％Ｎｉ残
Ｆｅ）やＦｅ材等を使用している。シャドウマスク１を
支持する枠体２は、例えばＦｅ材で厚さ１．４ｔでプレ
スにより製作されている。内部磁気シ−ルド３は、例え
ば厚さ０．１３ｔのＦｅ材をプレス加工等することによ
り製作されている。The shadow mask 1 is formed by etching a thin plate (eg, 0.13 t) into an opening such as a circle, a slit, or a slot (for example, a circular hole having a diameter of about φ).
110 μm), and then formed into a predetermined shape by press working or the like. As a material of the shadow mask 1, for example, an invar material (36% Ni residual Fe), an Fe material, or the like is used. The frame 2 supporting the shadow mask 1 is made of, for example, Fe material and has a thickness of 1.4 t and is manufactured by pressing. The internal magnetic shield 3 is manufactured by, for example, pressing a Fe material having a thickness of 0.13 t.
【００１５】次に、枠体２と内部磁気シ−ルド３の取付
け部の構成の詳細を図２及び図３を用いて説明する。図
２に示すように、枠体２の第１のフランジ部２ａ及び内
部磁気シールド３の第２のフランジ部３ａの各辺には、
第１の係合孔４及び第２の係合孔５（５のみ図示する）
が設けられ、各係合孔４，５にそれぞれバネ係止部材６
が嵌装されている。図３に示すように、枠体２の第１の
フランジ部２ａの各辺に設けられた第１の係合孔４とそ
れぞれ対応するように、内部磁気シールド３の第２のフ
ランジ部３ａの各辺にも同数の第２の係合孔５が設けら
れている。バネ係止部材６は、枠体２の第１の係合孔４
と、それに対向する内部磁気シールド３の第２の係合孔
５を貫通するように挿入され、バネの弾性により枠体２
と内部磁気シールド３とを固定する。バネ係止部材６
は、図３に示すように、弾性を有するリボン状体を略対
称形に折曲げたものであり、中央部には、第１の係合孔
４と第２の係合孔５とを係合し、かつ、抜けにくくする
ためのアンカー部６ａ及び弾性を発生させるための脚部
６ｂが形成されている。枠体２の第１の係合孔４及び内
部磁気シールド３の第２の係合孔５は、バネ係止部材６
と係合するため、図２に示す方向から見て、それぞれ略
矩形形状である。Next, details of the structure of the mounting portion of the frame 2 and the internal magnetic shield 3 will be described with reference to FIGS. As shown in FIG. 2, on each side of the first flange 2a of the frame 2 and the second flange 3a of the internal magnetic shield 3,
First engagement hole 4 and second engagement hole 5 (only 5 is shown)
Are provided in each of the engagement holes 4 and 5, respectively.
Is fitted. As shown in FIG. 3, the second flange portion 3a of the internal magnetic shield 3 corresponds to the first engagement holes 4 provided on each side of the first flange portion 2a of the frame 2. The same number of second engagement holes 5 are provided on each side. The spring locking member 6 is connected to the first engagement hole 4 of the frame 2.
Is inserted through the second engaging hole 5 of the internal magnetic shield 3 opposed thereto, and the frame 2
And the internal magnetic shield 3 are fixed. Spring locking member 6
As shown in FIG. 3, a ribbon-like body having elasticity is bent substantially symmetrically, and a first engaging hole 4 and a second engaging hole 5 are An anchor portion 6a for engaging and hardly falling off and a leg portion 6b for generating elasticity are formed. The first engagement hole 4 of the frame 2 and the second engagement hole 5 of the internal magnetic shield 3 are
, Each having a substantially rectangular shape when viewed from the direction shown in FIG.
【００１６】図４に示すように、内部磁気シ−ルド３の
第２の係合孔５の各辺には、折り返し７が施されてい
る。すなわち、バネ系止部材６と第２の係合孔５との接
触面にバリがない構成であり、金属異物でであるバリが
シャドウマスクの開口部に詰まったり、電子銃の電極間
に付着することを防止する。特に、内部磁気シ−ルド３
の第２の係合孔５の各辺の折り返し７の幅を１．０ｍｍ
以下とすることにより、折り返し部に隙間が生じないよ
うに密着させることができる。折り返し部を密着させる
ことにより、折り返し部の隙間がなくなり、隙間への異
物の侵入を防止することができる。その結果、金属異物
であるバリのシャドウマスクの開口部の孔詰まりや電子
銃の電極間への付着を防止することができる。As shown in FIG. 4, each side of the second engagement hole 5 of the internal magnetic shield 3 is provided with a fold 7. That is, there is no burr on the contact surface between the spring stop member 6 and the second engagement hole 5, and the burr which is a metal foreign matter is clogged in the opening of the shadow mask or adheres between the electrodes of the electron gun. To prevent In particular, the internal magnetic shield 3
The width of the fold 7 on each side of the second engagement hole 5 is 1.0 mm
By the following, the folded portions can be closely attached so that no gap is generated. By making the folded portions adhere to each other, a gap between the folded portions is eliminated, and foreign matter can be prevented from entering the gap. As a result, clogging of the openings of the shadow mask of burrs, which are metallic foreign substances, and adhesion between the electrodes of the electron gun can be prevented.
【００１７】[0017]
【実施例】次に、本発明の陰極線管及びその製造方法の
具体的数値実施例について説明する。ここでは、４１ｃ
ｍＣＭＴ（カラーモニターチューブ：Color Monitor Tu
be）に用いる内部磁気シ−ルドの例で説明する。シャド
ウマスク１は、０．１３ｔの薄板をエッチングし、直径
約φ１１０μｍの丸孔を多数個設けた。シャドウマスク
３の材料としては、熱膨脹を考慮する場合、低膨脹材で
あるインバ−材（３６％Ｎｉ−残Ｆｅ）を用いる。ま
た、コストを考慮する場合、Ｆｅ材等を使用する。これ
らの材料からなる薄平板をプレス加工し、図１に示すよ
うな形状に成形した。Next, specific numerical examples of the cathode ray tube and the method of manufacturing the same according to the present invention will be described. Here, 41c
mCMT (Color Monitor Tu
An example of the internal magnetic shield used in be) will be described. The shadow mask 1 was formed by etching a 0.13 t thin plate and providing a large number of round holes having a diameter of about φ110 μm. As a material of the shadow mask 3, when thermal expansion is considered, an invar material (36% Ni-remaining Fe) which is a low expansion material is used. When cost is considered, an Fe material or the like is used. A thin flat plate made of these materials was pressed and formed into a shape as shown in FIG.
【００１８】枠体２は、厚さ１．４ｔのＦｅ材（アルミ
キルド鋼）をプレス加工して成形した。枠体２は１．４
ｔと厚いため、プレス加工による打ち抜き際、一方の面
はダレが多くなり、バリの発生はない。他方の面には、
面押し加工を施したので、バリの発生が押さえられてい
る。The frame 2 was formed by pressing a Fe material (aluminum killed steel) having a thickness of 1.4 t. Frame 2 is 1.4
Because of the thickness t, when punching by press working, sagging on one surface increases, and no burr occurs. On the other side,
Since the surface is pressed, the occurrence of burrs is suppressed.
【００１９】一方、内部磁気シ−ルド３は、厚さ０．１
３ｔのＦｅ系材料をプレス加工し、図１及び図２に示す
ような形状に成形した。なお、材料の厚さが薄いので、
面押し加工を施すことができない。さらに、プレス成形
後、ハレ−ション防止のため、表面全体に黒化膜処理を
施した。この処理により、材料の硬度はＨｖ１７５前後
となる。また、バネ系止部材６は、例えば厚さ０．４ｔ
のＳＵＳ６３１リボン状の薄板を所定形状に折曲げた
後、析出硬化処理を施したものであり、硬度Ｈｖ４７０
前後である。On the other hand, the internal magnetic shield 3 has a thickness of 0.1
A 3t Fe-based material was pressed and formed into a shape as shown in FIGS. In addition, since the thickness of the material is thin,
Cannot be face pressed. Further, after press molding, a blackening film treatment was applied to the entire surface to prevent halation. By this processing, the hardness of the material becomes about Hv175. Further, the spring-based stopping member 6 has a thickness of, for example, 0.4 t.
Is obtained by bending a SUS631 ribbon-shaped thin plate into a predetermined shape and then performing a precipitation hardening treatment.
Before and after.
【００２０】次に、シャドウマスク１と枠体２とを、溶
接等の方法により組み立てた。さらに、図２に示すよう
に、枠体２に取り付けれているバネ（図示せず）とパネ
ル８に付けられているスタッドピン（図示せず）とを嵌
装させ、パネル８とシャドウマスク１及び枠体２が一体
となったものとを組み立てた。次に、シャドウマスク１
と共にパネル８に取り付けられた枠体２へ、磁気をシ−
ルドするための内部磁気シ−ルド３を取り付けた。Next, the shadow mask 1 and the frame 2 were assembled by a method such as welding. Further, as shown in FIG. 2, a spring (not shown) attached to the frame 2 and a stud pin (not shown) attached to the panel 8 are fitted, and the panel 8, the shadow mask 1 and The one with the frame 2 integrated was assembled. Next, shadow mask 1
At the same time, magnetic force is applied to the frame 2 attached to the panel 8.
An internal magnetic shield 3 for shielding was attached.
【００２１】枠体２と内部磁気シールド３との結合は、
枠体２の第１の係合孔４と内部磁気シ−ルド３の第２の
係合孔５の位置をとを一致させた後、バネ系止部材６の
アンカー部６ａを内部磁気シ−ルド３側から挿入した。
図３に示すように、バネ系止部材６のアンカー部６ａの
最大幅は、枠体２の第１の係合孔４及び内部磁気シール
ド３の第２の係合孔５の幅よりも広いため、一旦アンカ
ー部６ａが第１の係合孔４及び第２の係合孔５に嵌装さ
れると容易には外れない構造である。また、バネ系止部
材６の脚部６ｂが内部磁気シールド３を枠体２側に押し
つけるため、内部磁気シールド３が枠体２に密着固定さ
れる。なお、バネ系止部材６は枠体２の第１のフランジ
部２ａ及び内部磁気シールド３の第２のフランジ３ａの
各辺にそれぞれ設けられるため、枠体２と内部磁気シー
ルド３の相対的位置は、容易にはずれない。The connection between the frame 2 and the internal magnetic shield 3 is as follows.
After the position of the first engagement hole 4 of the frame 2 and the position of the second engagement hole 5 of the internal magnetic shield 3 are made to coincide with each other, the anchor 6a of the spring system stop member 6 is moved to the internal magnetic shield. Inserted from the 3rd side.
As shown in FIG. 3, the maximum width of the anchor portion 6 a of the spring stop member 6 is wider than the width of the first engagement hole 4 of the frame 2 and the second engagement hole 5 of the internal magnetic shield 3. Therefore, once the anchor portion 6a is fitted in the first engagement hole 4 and the second engagement hole 5, the structure is not easily removed. Further, since the leg portions 6 b of the spring system stopping member 6 press the internal magnetic shield 3 against the frame 2, the internal magnetic shield 3 is tightly fixed to the frame 2. In addition, since the spring system stopping member 6 is provided on each side of the first flange portion 2a of the frame 2 and the second flange 3a of the internal magnetic shield 3, the relative position between the frame 2 and the internal magnetic shield 3 is set. Does not come off easily.
【００２２】図４に示すように、内部磁気シ−ルド３の
第２の係合孔５の開口部は略矩形状であり、各辺にそれ
ぞれ折り返し７を設けている。すなわち、内部磁気シ−
ルド３の第２の係合孔５の端面には、バリが存在するプ
レス加工による打ち抜き面ではなく、バリの存在しない
なめらかな折曲げ面が現れる。従って、バネ系止部材６
のアンカー部６ａが第１の係合孔４及び第２の係合孔５
に嵌装される際、バネ系止部材６のアンカー部６ａの表
面と内部磁気シ−ルド３の第２の係合孔５の端面とが互
いに摺動するが、バネ系止部材６がバリを落下させるこ
とはない。その結果、バリの脱落によるシャドウマスク
の開口部の閉塞の発生を防止することができ、電子ビ−
ムの遮蔽による蛍光体の不発光、即ち、画像欠陥は生じ
ない。As shown in FIG. 4, the opening of the second engaging hole 5 of the internal magnetic shield 3 has a substantially rectangular shape, and a turn 7 is provided on each side. That is, the internal magnetic sheath
On the end face of the second engagement hole 5 of the screw 3, not a punched face formed by press working with burrs but a smooth bent face without burrs appears. Therefore, the spring system stop member 6
Of the first engagement hole 4 and the second engagement hole 5
When it is fitted to the surface, the surface of the anchor portion 6a of the spring system stop member 6 and the end surface of the second engagement hole 5 of the internal magnetic shield 3 slide with each other. Will not fall. As a result, it is possible to prevent the opening of the shadow mask from being blocked due to the removal of burrs, and it is possible to prevent the electron beam from being blocked.
No emission of the phosphor due to the shielding of the system, that is, no image defect occurs.
【００２３】特に、図５に示すように、内部磁気シ−ル
ド３の第２の係合孔５の折り返し７の幅Ａを１．０ｍｍ
以下とすることにより、折り返し７部分に隙間が生じな
いように密着させることができる。もしも折り返し幅が
広いと、折り返し７部分に隙間が生じ、隙間にバリ等の
異物が侵入する可能性がある。次に、実験した結果につ
いて述べる。本発明の内部磁気シ−ルドを使用した実験
結果では、シャドウマスクの孔詰まりに関しては、従来
例と比較して従来の孔詰り不良全体の３０％を良化する
ことができた。さらに、電極間付着による絶縁不良に関
しては、従来の絶縁不良全体の２７％を良化することが
できた。In particular, as shown in FIG. 5, the width A of the folded portion 7 of the second engagement hole 5 of the internal magnetic shield 3 is set to 1.0 mm.
By doing the following, it is possible to make the folded portions 7 adhere to each other so that no gap is formed. If the folded width is wide, a gap is formed in the folded portion 7 and foreign matter such as burrs may enter the gap. Next, the results of the experiment will be described. According to the experimental results using the internal magnetic shield of the present invention, with respect to the clogging of the shadow mask, 30% of the conventional defective hole clogging could be improved as compared with the conventional example. Furthermore, with respect to the insulation failure due to the adhesion between the electrodes, 27% of the conventional insulation failure was improved.
【００２４】なお、上記説明では、内部磁気シ−ルド３
の第２の係合部５の折り返し７を、バネ系止部材６の挿
入方向側に構成した例を示したが、枠体２側に折り返し
７を設けた構成であっても同様の効果を奏する。また、
第１の係合孔４及び第２の係合孔５の開口部の形状を矩
形としたが、これに限定されるものではなく、丸や楕円
形であっても同様の効果を奏する。In the above description, the internal magnetic shield 3
The example in which the folded back 7 of the second engaging portion 5 is formed on the insertion direction side of the spring system stopping member 6 has been described, but the same effect can be obtained even if the folded back 7 is provided on the frame 2 side. Play. Also,
Although the shape of the opening of the first engagement hole 4 and the second engagement hole 5 is rectangular, the present invention is not limited to this, and the same effect can be obtained even if the shape is round or oval.
【００２５】[0025]
【発明の効果】以上のように、本発明の陰極線管及びそ
の製造方法によれば、シャドウマスクを支持する枠体と
内部磁気シールドとをバネ係止部材によりワンタッチで
固定する陰極線管及びその製造方法において、少なくと
も内部磁気シ−ルドに設けられた第２の係合孔の端面の
うち、バネ係止部材が摺動する部分に折り返しを設けた
ので、バネ係止部材を枠体の第１の係合孔及び内部磁気
シ−ルドに設けられた第２の係合孔に嵌装する際、バネ
係止部材は内部磁気シ−ルドの第２の係合孔の端面を折
り返した、バリのないなめらかな面を摺動する。そのた
め、バネ係止部材がバリと接触せず、バリを落下させる
こともない。その結果、バリの脱落によるシャドウマス
クの孔詰まりや電子銃の電極間の絶縁不良を防止し、陰
極線管の品質向上という有利な効果が得られる。As described above, according to the cathode ray tube of the present invention and the method of manufacturing the same, the cathode ray tube in which the frame supporting the shadow mask and the internal magnetic shield are fixed by one-touch with the spring locking member and the manufacturing thereof. In the method, at least a portion of the end face of the second engagement hole provided in the internal magnetic shield is folded at a portion where the spring locking member slides, so that the spring locking member is connected to the first of the frame. When fitted in the second engaging hole provided in the inner magnetic shield and the inner magnetic shield, the spring locking member is formed by turning the end face of the second engaging hole of the inner magnetic shield into a burr. Sliding on a smooth surface without Therefore, the spring locking member does not contact the burr, and the burr does not drop. As a result, it is possible to prevent clogging of holes in the shadow mask due to the removal of burrs and poor insulation between the electrodes of the electron gun, thereby obtaining an advantageous effect of improving the quality of the cathode ray tube.
【００２６】また、内部磁気シ−ルドの第２の係合孔の
各辺の折り返し幅を１．０ｍｍ以下とすることにより、
プレス加工による折り曲げの際の密着性を良好にするこ
とができ、折り返し部に隙間がないため、折り返し部へ
の異物の侵入を防止することができる。また、枠体の第
１の係合孔及び内部磁気シ−ルドの第２の係合孔の開口
部の形状を、略矩形、略円形及び略楕円形から選択され
たいずれかとすることにより、係合孔の端面の折返し加
工が容易にできるとともに、様々な形状のバネ係止部材
に対応することができる。Further, by setting the turn width of each side of the second engagement hole of the internal magnetic shield to 1.0 mm or less,
Adhesion at the time of bending by press working can be improved, and since there is no gap in the folded portion, entry of foreign matter into the folded portion can be prevented. Further, the shape of the opening of the first engaging hole of the frame and the opening of the second engaging hole of the internal magnetic shield is selected from substantially rectangular, substantially circular, and substantially elliptical shapes. Folding of the end surface of the engagement hole can be easily performed, and various shapes of spring locking members can be accommodated.
【図１】本発明の陰極線管及びその製造方法の一実施形
態におけるシャドウマスク、枠体及び内部磁気シ−ルド
の組立て構成を示す正面図FIG. 1 is a front view showing an assembly configuration of a shadow mask, a frame, and an internal magnetic shield in an embodiment of a cathode ray tube and a method of manufacturing the same according to the present invention.
【図２】図１に示す本発明の陰極線管及びその製造方法
の一実施形態におけるパネル、シャドウマスクと一体化
された枠体及び内部磁気シ−ルドの組立てを示す底面図FIG. 2 is a bottom view showing an assembly of a panel, a frame integrated with a shadow mask, and an internal magnetic shield in one embodiment of the cathode ray tube and the method of manufacturing the same according to the present invention shown in FIG.
【図３】本発明の陰極線管及びその製造方法の一実施形
態におけるバネ系止部材による枠体と内部磁気シ−ルド
の固定方法を示す部分拡大断面図FIG. 3 is a partially enlarged cross-sectional view showing a method of fixing a frame and an internal magnetic shield by a spring-based stop member in one embodiment of the cathode ray tube and the method of manufacturing the same according to the present invention;
【図４】本発明の陰極線管及びその製造方法の一実施形
態における内部磁気シ−ルドに設けられた第２の係合部
を示す部分拡大平面図FIG. 4 is a partially enlarged plan view showing a second engaging portion provided on an internal magnetic shield in one embodiment of the cathode ray tube and the method of manufacturing the same according to the present invention;
【図５】本発明の陰極線管及びその製造方法の一実施形
態における内部磁気シ−ルドに設けられた第２の係合孔
を示す部分拡大断面図FIG. 5 is a partially enlarged cross-sectional view showing a second engagement hole provided in an internal magnetic shield in one embodiment of the cathode ray tube and the method of manufacturing the same according to the present invention.
１ ：シャドウマスク ２ ：枠体（シャドウマスクフレ−ム） ２ａ：第１のフランジ部 ３ ：内部磁気シ−ルド ３ａ：第２のフランジ部 ４ ：枠体に設けられた第１の係合孔 ５ ：内部磁気シ−ルドに設けられた第２の係合孔 ６ ：バネ系止部材 ６ａ：アンカー部 ６ｂ：脚部 ７ ：折り返し ８ ：パネル 1: shadow mask 2: frame (shadow mask frame) 2a: first flange portion 3: internal magnetic shield 3a: second flange portion 4: first engagement hole provided in the frame body 5: second engagement hole provided in the internal magnetic shield 6: spring-based stop member 6a: anchor portion 6b: leg portion 7: folded back 8: panel
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石井 敏夫 兵庫県神戸市垂水区西舞子４丁目11番21号 株式会社村元工作所内 (72)発明者 村元 忠史 兵庫県神戸市垂水区西舞子４丁目11番21号 株式会社村元工作所内 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Toshio Ishii 4-11-21 Nishimaiko, Tarumi-ku, Kobe City, Hyogo Prefecture Inside Muramoto Machinery Works Co., Ltd. No. 11-21 Inside Muramoto Factory
Claims (6)
複数の開口部を有するシャドウマスクと、 陰極線管の管軸に略直交する方向に形成された第１のフ
ランジ部及び前記第１のフランジ部に形成された複数の
第１の係合孔を有し、前記シャドウマスクを支持する枠
体と、 前記陰極線管の管軸に略直交する方向に形成された第２
のフランジ部及び前記第２のフランジ部に形成され、前
記枠体の第１の係合孔にそれぞれ対向する複数の第２の
係合孔を有し、前記枠体に固定された内部磁気シ−ルド
と、 前記対向する第１の係合孔及び第２の係合孔を貫通して
嵌合し、前記内部磁気シールドを前記枠体に固定する複
数のバネ係止部材を具備し、 少なくとも前記内部磁気シ−ルドの第２の係合孔の端面
のうち、前記バネ係止部材が摺動する部分を折り返した
陰極線管。1. A shadow mask having a plurality of openings having a predetermined shape arranged in a predetermined pattern, a first flange portion formed in a direction substantially perpendicular to a tube axis of a cathode ray tube, and the first flange. A frame body having a plurality of first engagement holes formed in the portion and supporting the shadow mask; and a second body formed in a direction substantially perpendicular to a tube axis of the cathode ray tube.
A plurality of second engagement holes formed in the flange portion and the second flange portion and opposed to the first engagement holes of the frame, respectively, and the internal magnetic system fixed to the frame. And a plurality of spring engaging members that fit through the first and second engaging holes and the second engaging hole and that fix the internal magnetic shield to the frame. A cathode ray tube in which a portion of the end surface of the second engagement hole of the internal magnetic shield, on which the spring locking member slides, is folded back.
端面の折り返し幅は１．０ｍｍ以下である請求項１の陰
極線管。2. The cathode ray tube according to claim 1, wherein the turn width of the end face of the second engagement hole of the internal magnetic shield is 1.0 mm or less.
気シ−ルドの第２の係合孔の開口部の形状は、略矩形、
略円形及び略楕円形から選択されたいずれかである請求
項１又は２記載の陰極線管。3. The shape of the opening of the first engagement hole of the frame and the second engagement hole of the internal magnetic shield is substantially rectangular.
3. The cathode ray tube according to claim 1, wherein the cathode ray tube is one selected from a substantially circular shape and a substantially elliptical shape.
複数の開口部を有するシャドウマスクと、前記シャドウ
マスクを支持する枠体と、前記枠体に固定された内部磁
気シ−ルドとを具備する陰極線管の製造方法であって、 前記枠体及び内部磁気シールドの陰極線管の管軸に略直
交する方向に形成された第１及び第２のフランジ部に、
それぞれ相互に対向する複数の第１及び第２の係合孔を
設け、 少なくとも前記内部磁気シ−ルドの第２の係合孔の端面
のうち、前記バネ係止部材が摺動する部分を折り返し、
前記対向する第１の係合孔及び第２の係合孔にそれぞれ
バネ係止部材を貫通して嵌合させ、前記内部磁気シール
ドを前記枠体に固定する陰極線管の製造方法。4. A shadow mask having a plurality of openings of a predetermined shape arranged in a predetermined pattern, a frame supporting the shadow mask, and an internal magnetic shield fixed to the frame. A method of manufacturing a cathode ray tube, comprising: first and second flange portions formed in a direction substantially perpendicular to a tube axis of the cathode ray tube of the frame and the internal magnetic shield;
A plurality of first and second engagement holes which are respectively opposed to each other, and at least a portion of the end surface of the second engagement hole of the internal magnetic shield where the spring locking member slides is folded back. ,
A method for manufacturing a cathode ray tube, wherein a spring locking member is inserted through and fitted into the opposed first and second engagement holes, and the internal magnetic shield is fixed to the frame.
各辺の折り返し幅を１．０ｍｍ以下とする請求項４の陰
極線管の製造方法。5. The method for manufacturing a cathode ray tube according to claim 4, wherein the folded width of each side of the second engagement hole of the internal magnetic shield is 1.0 mm or less.
気シ−ルドの第２の係合孔の開口部の形状は、略矩形、
略円形及び略楕円形から選択されたいずれかである請求
項４又は５記載の陰極線管。6. The shape of the opening of the first engagement hole of the frame and the second engagement hole of the internal magnetic shield is substantially rectangular.
The cathode ray tube according to claim 4, wherein the cathode ray tube is one selected from a substantially circular shape and a substantially elliptical shape.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8333219A JPH10172450A (en) | 1996-12-13 | 1996-12-13 | Cathode-ray tube and manufacture thereof |
| MYPI97005819A MY119468A (en) | 1996-12-13 | 1997-12-04 | Cathode ray tube and method for manufacturing the same |
| US08/984,890 US5986393A (en) | 1996-12-13 | 1997-12-04 | Cathode ray tube and method of manufacturing the same |
| TW086118284A TW445479B (en) | 1996-12-13 | 1997-12-05 | Cathode-ray tube and manufacture thereof |
| CN97125542A CN1106664C (en) | 1996-12-13 | 1997-12-12 | Cathod-ray tube and mfg. method therefor |
| US09/412,664 US6213836B1 (en) | 1996-12-13 | 1999-10-05 | Cathode ray tube and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8333219A JPH10172450A (en) | 1996-12-13 | 1996-12-13 | Cathode-ray tube and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10172450A true JPH10172450A (en) | 1998-06-26 |
Family
ID=18263655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8333219A Pending JPH10172450A (en) | 1996-12-13 | 1996-12-13 | Cathode-ray tube and manufacture thereof |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US5986393A (en) |
| JP (1) | JPH10172450A (en) |
| CN (1) | CN1106664C (en) |
| MY (1) | MY119468A (en) |
| TW (1) | TW445479B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10172450A (en) * | 1996-12-13 | 1998-06-26 | Matsushita Electron Corp | Cathode-ray tube and manufacture thereof |
| IT1313924B1 (en) * | 1999-11-05 | 2002-09-26 | Videocolor Spa | STRUCTURE OF FRAME / MASK PERFECTED FOR TUBE WITH CATHODE RAYS. |
| CN1679134A (en) * | 2002-08-28 | 2005-10-05 | 皇家飞利浦电子股份有限公司 | Frame section for a cathode ray tube |
| JP2008288394A (en) * | 2007-05-17 | 2008-11-27 | Sharp Corp | Manufacturing method of metal reflection wall |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1356440A (en) * | 1970-07-07 | 1974-06-12 | Licentia Gmbh | Colour television tube |
| US3962598A (en) * | 1973-04-16 | 1976-06-08 | Gte Sylvania Incorporated | Means for restricting movement of a shadow mask in a direction transverse to the longitudinal axis of a color cathode ray tube |
| MY106478A (en) * | 1989-09-05 | 1995-05-30 | Samsung Electron Devices Co Ltd | Color cathode ray tube having improved spring type contactor. |
| JPH05151908A (en) * | 1991-11-29 | 1993-06-18 | Sony Corp | Cathode-ray tube |
| KR940011935B1 (en) * | 1992-03-03 | 1994-12-27 | 삼성전관 주식회사 | Shadow mask frame and inner shield assembling structure for color crt |
| EP0652581B1 (en) * | 1993-11-04 | 1997-08-20 | ORION ELECTRIC Co., Ltd. | A P-F connector structure for a cathode-ray tube |
| JPH0917347A (en) * | 1995-06-28 | 1997-01-17 | Toshiba Corp | Color cathode-ray tube |
| TW328605B (en) * | 1996-03-11 | 1998-03-21 | Hitachi Ltd | The color cathode tube |
| JPH10172450A (en) * | 1996-12-13 | 1998-06-26 | Matsushita Electron Corp | Cathode-ray tube and manufacture thereof |
-
1996
- 1996-12-13 JP JP8333219A patent/JPH10172450A/en active Pending
-
1997
- 1997-12-04 MY MYPI97005819A patent/MY119468A/en unknown
- 1997-12-04 US US08/984,890 patent/US5986393A/en not_active Expired - Fee Related
- 1997-12-05 TW TW086118284A patent/TW445479B/en not_active IP Right Cessation
- 1997-12-12 CN CN97125542A patent/CN1106664C/en not_active Expired - Fee Related
-
1999
- 1999-10-05 US US09/412,664 patent/US6213836B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1185648A (en) | 1998-06-24 |
| MY119468A (en) | 2005-05-31 |
| TW445479B (en) | 2001-07-11 |
| CN1106664C (en) | 2003-04-23 |
| US6213836B1 (en) | 2001-04-10 |
| US5986393A (en) | 1999-11-16 |
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